How to install VS2015 Community Edition offline

As pointed in MSDN: Create an Offline Installation of Visual Studio:

To create an offline installation layout

1. Choose the edition of Visual Studio that you want to install from the my.visualstudio.com download page.

2. After you download the installer to a location on your file system, run "<executable name> /layout". For example, run: en_visual_studio_community_2015.exe /layout D:\VisualStudio2015

   By using the /layout switch, you can download almost all the installation packages, not just the ones that apply to the download machine. This approach gives you the files that you need to run this installer anywhere and it might be useful if you want to install components that weren't installed originally.

3. After you run this command, a dialog box will appear that allows you to change the folder where you want the offline installation layout to reside. Next, click the Download button.

   When the package download is successful, you should see a message that says Setup Successful! All specified components have been acquired successfully.

4. Locate the folder that you specified earlier. (For example, locate D:\VisualStudio2015.) This folder contains everything you need to copy to a shared location or install media.

   Caution: Currently, the Android SDK does not support an offline installation experience. If you install Android SDK Setup items on a computer that is not connected to the internet, the installation might fail. For more information, see the "Troubleshooting an offline installation" section in this topic.

5. Run the installation from the file location or from the install media.

edit:

Starting from visual studio 2017 Microsoft is no longer offering .ISO images. For the new visual studio 2017 you have to download vs_community.exe from here and create an offline instalation folder:

vs_community.exe --layout c:\vs2017offline

Then, in order to install from that folder you have to first install certificates from \certificates in the download folder and then run the installation.

It seems there are direct links and anyone could get it with a download manager.

http://download.microsoft.com/download/1/6/d/16dc7044-cd36-49b4-bdba-30166e07c786/vs2015.2.com_deu.iso

http://download.microsoft.com/download/f/d/c/fdce5d40-87d3-4bd6-9139-2a7638b96174/vs2015.2.com_enu.iso

http://download.microsoft.com/download/4/1/5/415ec933-31ee-443d-8bd6-55268d472331/vs2015.2.com_esn.iso

http://download.microsoft.com/download/7/7/4/77471e13-cfac-43c2-b76e-459238142bd5/vs2015.2.com_fra.iso

http://download.microsoft.com/download/5/9/9/5991bfbe-21d0-430a-ad1c-2aa8328a2d3e/vs2015.2.com_ita.iso

http://download.microsoft.com/download/c/a/1/ca188bdc-fead-4933-a699-4da31a4b04db/vs2015.2.com_rus.iso

http://download.microsoft.com/download/3/4/a/34a0480a-effd-4e12-878b-d243bdbb4d2c/vs2015.2.com_kor.iso

http://download.microsoft.com/download/0/f/8/0f89c8af-9430-4c13-bf6a-d75b7513ac29/vs2015.2.com_chs.iso

http://download.microsoft.com/download/1/2/c/12c9f1b7-71e2-46fc-a07b-e53b2a954c4c/vs2015.2.com_jpn.iso

http://download.microsoft.com/download/7/1/8/7186591d-7877-4461-9b49-7e236846f526/vs2015.2.com_cht.iso

References from here

Download the file of website and start it with the commandline switch "/layout" (see msdn to download visual studio 2015 installer for offline installation). So C:\vs_community.exe /layout for example. It asks for a location and the download begins.

EDIT: With the ISO version you still need internet connection to be able to install ALL the features. As pointed out by Augusto Barreto.